PDF malware analysis — malicious · f09949b727ed0b15

MALICIOUS

PDF

43.1 KB Created: 2021-05-15 00:33:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24

MD5: d82b53388621725e2351f6f521ab4fb4 SHA-1: 0aea19316ba7b6678ccfe273b1e7e16dd5062718 SHA-256: f09949b727ed0b15603d522f8aab20a5610ca5da49203c0c9d3e339e5f6a684a

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file contains numerous links designed to redirect users to malicious infrastructure, masquerading as "free generator" or "game hack" content. The primary redirector URL is https://netcdn.xyz/app/431946152/www-free-robux-game-hack. The document body, though heavily obfuscated, contains references to these lures and the associated URLs. The presence of multiple links to known malicious redirectors and SEO-optimized PDF slugs indicates a coordinated effort for malware distribution or phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 5

PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://netcdn.xyz/app/431946152/www-free-robux-game-hack In PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/www-robux-redeem_GM431946152.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004a25.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4A25	25816 bytes
SHA-256: `56aa9bb27bd6c2c0e409d35f8af7852bb73f53c0bac794dfcb0e5f85842e30ce`
`font_01_sfnt_off000085ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85AD	18376 bytes
SHA-256: `3afa3067d1f3c9d8d4e5028784d7d2a7352a3b977a914758f486701e4d265e0a`

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